Expansible tool for repairing spindles



Aug. 14, 1951 c. DE LANCEY EXPANSIBLE TOOL FOR REPAIRING SPINDLES FiledMay 16, 1949 Cz/Fmeo' DE Maser,

IN V EN TOR.

Arrow/14 Patented Aug. 14, 195T UNITED EXPANSIBLE TOOL FOR REPAIRINGSPDIDLES Clifiord De Lancey, Blackstock, S; 0.

Application May 16, 1949, Serial No. 93,453

1 Claim. (Cl. 29494) This invention relates to an expansible hand tooladapted to be inserted in a tubular bolster and then expanded forremoving the tubular bolster from a bolster case, in which it may havebecome stuck due to lack of lubrication or g'ummed oil residue, thebolster case being a usual part of a spindle of a type such as is usedin spinning frames and which is commonly known to the trade as a medium#4KD spindle.

A certain type of bolster base such as is used on spinning frames andthe like has a tubular bolster mounted for rotation therein and in whichthe spindle blade is supported, this type of bolster being commonlyknown as a McMullen bolster.

Now, due to friction and lack of lubrication, rotation of the bolster inthe bolster case will cause the same to burn and adhere to the walls ofthe bolster case, as a result of which the usual tape which drivesspindles of this type would merely slip in engagement with theconventional whorl of a spindle and the tubular bolster, along with thespindle blade, would remain stationary, thus requiring that the bolsterbe replaced in the bolster case. a

Heretofore, in removing the tubular bolster from the bolster case it hasbeen necessary to remove the bolster case from the conventional spindlerail or bolster rail and to then, by tapping the bolster case against ananvil or other hard object, gradually loosen the bolster in the bolstercase and cause the same to fall therefromby gravity. This often resultsin the base becoming damaged and in some instances the bolster case alsobecomes broken, and would also have to be replaced.

Also, upon again mounting the bolster case on the conventional bolsterrail, it is necessary for an experienced operator to mount the bolstercase on the bolster rail, insuring that the bolster case is accuratelyplumbed both above and below the horizontal plane of the bolster rail.

It is an object of this invention to provide a hand tool which is lightin weight and may be produced economically and which has an expansiblestem thereon adapted to be inserted in the open upper end of a tubularbolster which may have become stuck in a bolster case due to the reasonsheretofore set forth and, by expand extend and its other end beingcircular in crosssection and this stem being cut substantially along itsaxis from its end adjacent the enlarged portion to a point a substantialdistance from the circular end portion and then this end being curvedoutwardly to blend the portion out along its axis with the circular endportion of the stem thus forming a concave cam surface on the stem. Theenlarged portion of the stem has a semicircular hole extendingtherethrough in which a wedging member which is semi-circular in crosssection may be inserted, the fiat surface of the semi-circular membertapering outwardly at the free end thereof to form a convex cam surfaceand the flat surface of the wedging member being adapted to slidablyengage the flat surface of the stem out along its axis so that, upon thestem being inserted in a bolster, the wedging member may then beinserted through the semi-circular hole in the enlarged portion of thestem and its tapering cam surface will engage the mating surface on thestem to thus cause the free ends of the wedging member and the stem tomove outwardly in such a manner as to frictionally engage the interiorsurface of the bolster. An operator may then grasp the handle membersand pull the bolster out of the bolster case without the necessity ofremoving the bolster case from the bolster rail.

Some of the objects of the invention having been stated, other objectswill appear as the description proceeds, when taken in connection withthe accompanying drawings, in which- Figure 1 is a side elevation of theassembled expansible tool;

Figure 2 is a sectional plan view taken substantially along the line 2-2in Figure 1;

Figure 3 is an enlarged sectional plan view taken along the line 3-3 inFigure 1;

Figure 4 is a vertical sectional view through the tool showing the sameas being applied to a bolster for removing the same from a bolster case,the bolster case, bolster and a portion of I a bolster rail being shownin'cross section.

Referring more specifically to the drawings,

the numeral 10 broadly designates the expansible tool which comprises astem portion H which is substantially semi-circular in cross-section(Figure 3) and has an enlarged portion l2 integral therewith which ispreferably circular in crosssection as shown in Figure 2 forsubstantially its entire length. However, its lower end in Figure 1 isenlarged to its full diameter and thus has a concave cam surface [4which blends with the flat surface of the semi-circular stem II.

The enlarged portion l2 of the stem II has a pair of handle members orrods l6 and I1 threadably imbedded therein which are adapted to begrasped by an operator when the expansible tool I is being used in themanner to be later described. The enlarged portion |2 of the stem H hasa bore therein which extends substantially half way through the portionl2 and communicates with a substantially semi-circular bore 2|. Thissemi-circular bore 2| is adapted to slidably receive an expansion rod orwedging member 22 which is semi-circular in cross-section and which hasintegral therewith an upper portion-23 which is circular incross-section. This portion 23' has an enlarged knob portion 24 integraltherewith which is adapted to be grasped by an operator for insertingthe member 22 in the. bore 20. and the.

hole 2| as shown in Figures 1 and 4; Thesemicircular bore 2| serves toguide the wedging member 22 so that the fiat surface thereof will engagethe flat surface of the stem H to insureepositive: engagement of the camM with the cam 26 to bedescribed.

The lower end of the wedging member 22- is cut away on a slight are thusproviding a convex cam surface. 26, which is substantially of. the sameconfiguration as the cam surface M in the stem I I and these camsurfaces I4 and'26 are adapted to engage each' other when the tool 0 isbeing used in the manner to be later described; It might be stated thatthe stem H of the tool Ill may be of a separate piece of material fromthe enlarged portion l2, if desired, and may be inserted in the borelllwhich, in this instance, would extend the full length of the enlargedportion l2 and may then be welded to the enlarged portion l2.

Referring to Figure 4, there is shown a: portion of a bolster rail 3ll,which is. slidably penetrated by a bolster case 3|, the bolster cas 3|having an enlarged portion 32 integral therewith adapted to engage theupper surface of the bolsterrrail,

the bore in the bolster case 3 I. A-conventional tubular bolster 4%"is'snugly mounted within. the bore 40 and has slidably mounted in itslower end a; conventional pintle and hasa slot or oversized transversebore 46 therein which is loosely penetrated by a pin 47 whose opposed'ends are secured in the side walls of the tubular bolster 44' as by apressed fit. The pintle 45- has a V- shaped cavity 50 therein forreception of thelower end of a conventional spindle blade not shown. Thetubular bolster'44 has holes therein through which lubricant may flowinto the same.

It often happens that an operator will neglect to provide an amplesupply of lubricant in the oil reservoir 34 of the bolster case 31, thusresulting in the tubular bolster 44 running dry, which will, eventually,cause th tubular bolster 44 to become burned or expanded to cause thetubular bolster 44 to adhere to the walls of the bore 40- in the bolstercase 3|. In this event, it is necessary to remove the tubular bolster 44and to replace the same with a new bolster;

Now, in order to remove the bolster 44 from the The right-angularportionbolster case 3| after the bolster 44 has become stuck in the case3|, it is merely necessary to insert the stem II of the expansible toolI0 in the open upper end of the tubular bolster 44 and then theexpansion rod 22 is inserted through the bore: 20 and the semi-circularopening or hole 2| inthe manner'shown in Figure 4.- The operator thenforces the rod 22 downwardly to cause the cam surfaces 26 and 14 of therod 22 and the stem II, respectively, to engage one another and then by"applying" pressure to the upper end of the knob 24 in Figure 4, the camsurfaces will tend. to urgethe lower end of the members H and 22 apartfrom. each other, thus expanding the lower endofthatool ID and causingits outer surfacesto' frictionally engage the inner surface of thetubular bolster 44, after which it is merely necessary for the operatorto lift or to exert an upward pull on the handles |=Bahd I! and, in. so

doing, the, operator may remove the bolster 44 from the bolster case'3 IIn the drawings: and specification there has;

been set forth a preferred embodiment of the invention, and althoughspecific terms are .em-

ployed, they are-used in a generic and descrip-- tive sense-only, andnot for, purposes of limita-- tion, the scope of the invention beingdefinedin the claim.

I claim:

An expansible tool for removing a tubular bolster from a bolster casecomprising an elongated stem, semi-circular cross-section forsubstantially itsv entire length, and having an. enlarged portion at oneend thereof, said stembeing circular in cross-section at the endopposite from theenlarged portion, said stem being cut so as. to providea concave cam surface extending from: the circular end of said stem andblending with the flat surface of the semi-circular portion of the'stem,said enlarged portion being provided with a longitudinally extending.circular borev extending a portion of its length, said enlarged portionalso having a longitudinally extending, semi-circular bore extending aportion of its length andv communicating with the circular bore, theflat surface of said semi-circularbore being flush with th fiat surfaceof said stem, awedging member having a knob portion integral therewithand being circu-- lar in cross-section adjacent the knob portion andbeing semi-circular in cross-section for the. rest of its length, saidwedging member being adapted to be inserted into said boresin theenlarged portionsd that the fiat surface thereof will engage the flatsurface of the semi-circular bore andv theflat surface of thesemi-circular stem, the lower end of said wedging member having anarcuate surface blending with its flat side and terminating at. itsrounded surface remote from the flat side; said arcuate surface beingadapted toengage the concave cam surface of the elongatedstem to wedgethe stem and the wedging member-in the bolster for extractin the bolsterfrom'the-bol'ster case, and saidsemi-circular bore serving as a guide tocause positive engagement of the arcuate'surface of the wedgingmem-- berwith thecam surface of the stem,

CLIFFORD DE LANCEY.

REFERENCES CITED The following references are of record in the fileofthis patentr UNITED STATES PATENTS Name Date Ken'oyer' July 5, 1910:

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